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AIIMS2018Chemistryd and f Block Elements

Which of the following exhibits minimum number of oxidation states?

Options

  1. AMn
  2. BNp
  3. CTh
  4. DCr

Correct answer

C. Th

Step-by-step solution

Thorium can show normally +4 oxidation state whereas Mn , Cr can show large number of oxidation states. Np also belongs to 5 f series with variable oxidation states.

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